SUPPORT US. If is important to you, click here to donate to our Fall 2019 fundraiser!
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography

Unnamed (Ga-dominant member of the epidote group)

This page is currently not sponsored. Click here to sponsor this page.
The first silicate mineral with species-defining gallium. Author's proposed name is "epidote-(Ga)". As inclusions in sphalerite (common), more rarely in galena and pyrite; also rarely between quartz and sulfides. Confirmed by EPMA, Raman spectroscopy, stoichiometry, and habit.
The zonal grains are elongated, somewhat rounded or well-shaped, up to 100 microns in length. The "epidote-(Ga)" forms cores, which contain 6-20 wt.% Ga2O3. This is followed by Gallian Allanite-(Ce), relatively Ga-low allanite-(Ce), and Ga-devoid epidote-allanite.

Hide all sections | Show all sections

Chemical Properties of Unnamed (Ga-dominant member of the epidote group)Hide


Synonyms of Unnamed (Ga-dominant member of the epidote group)Hide

Relationship of Unnamed (Ga-dominant member of the epidote group) to other SpeciesHide

Other Members of this group:
Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
Epidote-(Sr){CaSr}{Al2Fe3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
Niigataite{CaSr}{Al3}(Si2O7)(SiO4)O(OH)Mon. 2/m
Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
Piemontite-(Pb){CaPb}{Al2Mn3+}(Si2O7)(SiO4)O(OH) Mon. 2/m : P21/m
Tweddillite{CaSr}{Mn3+AlMn3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
Unnamed (Fe3+ analogue of piemontite-(Pb))CaPbFe3+AlMn3+(Si2O7)(SiO4)O(OH)
Unnamed (Fe3+-analogue of piemontite)CaCaFe3+AlMn3+(Si2O7)(SiO4)(OH,O)2
Unnamed (Ga analogue of epidote)CaCaAlAlGa(Si2O7)(SiO4)O(OH)

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Unnamed (Ga-dominant member of the epidote group)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Soboleva, A.A., Varlamov, D., Mayorova, T. (2011): New Gallium End-Member in Epidote Group. American Geophysical Union, Fall Meeting 2011, abstract #V41B-2501

Internet Links for Unnamed (Ga-dominant member of the epidote group)Hide

Localities for Unnamed (Ga-dominant member of the epidote group)Hide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Khanty-Mansi Autonomous Okrug
Varlamov, D.A., Yermolaeva, V.N., Chukanov, N.V., Jančev, S., Vigasina, M.F., Plechov, P.Yu. (2019): Novoe v mineralogii nadgruppy epidota: neobychnye himicheskie sostavy, tipohimizm, KR-spektroskopiya (New data on chemical composition and Raman spectra of epidote-supergroup minerals). Zapiski RMO: 1: 79-99; DOI: 10.30695/zrmo/2019.1481.07 (in Russian, with English abstract)
  • Tyumen Oblast
    • Berezovo district
Soboleva, A.A., Varlamov, D., Mayorova, T. (2011): New Gallium End-Member in Epidote Group. American Geophysical Union, Fall Meeting 2011, abstract #V41B-2501
Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © and the Hudson Institute of Mineralogy 1993-2019, except where stated. Most political location boundaries are © OpenStreetMap contributors. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 16, 2019 10:43:36 Page generated: September 29, 2019 23:08:18
Go to top of page